user@server:~$ history | awk '{CMD[$2]++;count++;}END { for (a in CMD)print CMD[a] " " CMD[a]/count*100 "% " a;}' | grep -v "./" | column -c3 -s " " -t | sort -nr | nl |  head -n10
     1	235  23.5%  nano
     2	130  13%    sd
     3	94   9.4%   man
     4	86   8.6%   cd
     5	74   7.4%   gcc
     6	43   4.3%   ls
     7	37   3.7%   clear
     8	22   2.2%   sudo
     9	21   2.1%   apt
    10	18   1.8%   nslookup
user@server:~$